Important Watches

Geneva, Mar 20, 2010

LOT 278

IWC GST Deep One, first generation IWC, International Watch Co., Schaffhausen, ?GST Deep One?, Ref. 3527. Made circa 1999. Very fine, self-winding, water-resistant to 100 m, titanium diver's wristwatch with date, 3 crowns, depth gauge, length of dive indicator and an integral titanium IWC link bracelet. Accompanied by a fitted box, certificate, instruction booklet and accessories.

CHF 8,000 - 12,000

USD 7,500 - 11,000 / EUR 5,500 - 8,000

Sold: CHF 14,400

C. Two-body, brushed, screwed-down case back and crown, the crown at 2 adjusts the rotating inner bezel, the one at 4 resets the maximum depth indicator, sapphire crystal. D. Black with painted luminous baton indexes, yellow rotating ring for the diving time display, subsidiary seconds dial, aperture for the date at 3. Luminous steel baton hands. M. Cal. 8914, rhodium-plated, fausses cotes decoration, 40 jewels, straight-line lever escapement, monometallic balance adjusted to 5 positions, shock absorber, self-compensating flat balance spring, micrometer regulator. Dial, case and movement signed. Diam. 43 mm. Thickness 15 mm. Approx. overall length 195 mm.


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Grading System
Grade: AAA

Excellent
Case: 1

As new
Movement: 1*

As new

Overhaul recommended, at buyer's expense
Dial: 1-01

As new

HANDS Original

Notes

The IWC Deep One, introduced in 1999, was the first wristwatch equipped with a mechanical depth gauge that showed depth up to 45 meters. The mechanical depth system is a Bourdon tube which acts as a pressure-sensing element. When water enters the coil tube, it causes the tube to rigidify. The pressure is then indicated by a depth gauge hand in white. A yellow hand indicates the greatest depth during a dive. This system was independent from the watch movement, a JLC 891. A pump was furnished with the watch to test the pressure gauge.
The Deep one was made for a very short period due to its high cost of fabrication and relatively small market. Only a few IWC Deep One were sold and the watch was rapidly discontinued. Today, the watch has achieved cult status among collectors